abbott



Feb. 23 1926. 1,574,542

A. 0. AESBOT'I'. JR MACHINE FOR FORMING AND VULCANIZING STRIP MATERIAL CONTAINING LIKE 1924 2 Sheets-Sheet 1 RUBBER OR THE Filed May '7,

INVENTOR ADP/AM Q/41F3O 'ZJV.

BY Z2 HIS ATTO NEY Zigzi? Feb. 23 1926. 1,574,542

A. O. ABBOTT, JR MACHINE FOR FORMING AND VULCANIZING STRIP MATERIAL CONTAINING RUBBER OR THE LIKE Filed May 7, 1924 2 Sheets-Sheet 2 j ADM/M 0/4520 JR Patented Feb. 23, 1926 UNITED STATES PATENT QFFICE.

ADRIAN O. ABBOTT, JIL, OF DETROIT, MICHIGAN, ASSIGNOB TU IiEORGAN 8a WRIGHT, OF DETROIT, IvIICHlGAN, A CORPORATION 0L" MICHIGAN.

MACEEEHNE roe FORMING nun vurecaurzrues-rurr rez-rrnnrirn corumrurno RUBBER on THE LIKE.

Application filed May '7,

lie. it known that I, ADRIAN O. ABBOTT, J12, a citizen of the United States, and a resident cit Detroit, county of W ap rue, and State of li lichigau, have invented certain new and useful lmprovements in Machines for Forming an l Vulcanizi11g Strip Material Contaiuing Rubber or the like, of which the :iollowing is a full, clear, and exact descri ption.

This invention relates to amachine for mauutzuaturing products in strip form from material containing rubber or the like, and has for its principal object, forming and vulcanizing the material, by a continuous operation, whereby a product may be obtained of any desired length. By this means a strip-like product may be made of any desired length and thereafter cut up in the various .li gths desired for their intended purposes without any waste of the material and without the i'iecessity for splicing the parts together to obtain the desir d lengths.

"hr'lcrring to the drawings Fi ure 1 is a side elevation of the machine with portions thereof shown in dash lines and other portions broken away;

liigure 2 is an enlarged broken horizon tal sectional view through the center of Figure 1;

Figure 3 is an enlarged fragmental side vie showing p rts to the right in Figure 1;

Figure 4t is a tragmental broken sectional vi oi? the right-hand portion shown in rure E2 tal ren on a plane slightly behind the plane of liligure 2; i

l ut gure 5 is a tragmental sectional view showing a petcoclr conm'iunicating with the stea in chamber Figure 6 is a tragmental sectional view showing one type of mold cavity; and

Figures 7, 8 and 9 are sectional views of the material roughly shaped before feeding to the machine.

The invention is adapted for the manufacture ot a large variety 01 products employing plastics such as rubber or the like. For the purpose of illustration however the apparatus shown in the drawii'lgs has been constructed with mold cavities tor molding beads for pneumatic tire casings, and the invention will therefore hereafter be described more in particular with reference to this article or product, but without in any 192-1. Serial No. 711,563.

way intending to narrow the scope of the apparatus or the method involved.

The material, which may be either in whole or in part made of a suitable vulcanizable plastic, is first preferably reduced to strip ii'orm having the rough'cross section of the finished product. Figures 7, 8 and 9 show three such rough cross sections. These may be formed entirely of plastic, or where for instance a wire is to be insulated tor serving as an electrical conductor or where a tire bead is to be reinforced by a wire, fabric, or therwise, these elements will be incorporated with the plastic in the unfinished or rough condition shown in Figures 7, 8 and 9. F or convenience the term strip is employed in describing the roughly shaped material or vulcanized product regardless of the actual character of the product or article produced. These strips which will usually be of great lengths and wound upon a reel or reels are siniultaneously subjected to the action of rigid mold walls and of a vulcanizing heat to definitely shape and vulcanize them in aprogressive continuous man ner. The mold walls and mold cavity, when a tire casing bead is to be formed, is shown in Figure 6. When the product is formed and vulcanized to the desired degree the forming and vulcanizing actions are discontinued in a progressive continuous manner whereby a product of any desired length is produced by a continuous operation.

The drawings forming part of the present specification illustrate a preferred embodiment for carrying out the steps just set forth and comprise broadly viewed, a mold having a continuous or endless mold cavity adapted to be opened and closed fractionally, a Station for feeding the material to the mold, a station for receiving the product from the mold, means for producing con tinuous relative movement between the mold and stations whereby the endless mold cavity will pass the stations in a continuous progressive manner, means for progressively opening the mold tractionally in advance of the receiving station, means for closing the mold upon leaving the feeding station, and means for heating the mold.

The mold 1 is composed of oppositely disposed coacting parts 2 and 3, the part 2 being in the form of a drum and the pa t 3 be ing formed of a plurality of sections 4-.

The mold is secured on a shaft 5 which is rotatably mounted in a frame 6 and has seured at an extended end a drive wheel shown as a gear wheel 7 for rotating the mold which may be driven by any desired source of power (not shown).

The mold is provided with an endless mold cavity which may be formed in the adjacent faces of the coacting parts 2 and 3. In the present instance the mold cavity formed in the part 2 is formed on the periphery thereof, a feature of the present invention being that a number of such cavities may be formed on the periphery, making it pos ible to produce a number of articles, either of the same or different cross section, at the same time in a single organism and without increasing the number of operatives thereby reducing the cost of production to a minimum. In the drawings is shown a series of mold cavities 8 formed on the periphery of the mold part 2 of a shape to produce beads for automobile casings. It is not necessary in this particular instance to form coaoting cavities in the sections 4, although obviously this will be done in the usual manner where the cross section of the product requires it. Therefore in the present instance the sections 4 are simply provided with plain coacting faces, serving as covers for closing the cavities 8, shown in the enlarged view, Figure 6. The cavities are preferably formed in a steel rim 9 supported on the periphery of the drum 2.

The mold as viewed in Figure 1 is driven counterclockwise and at the right-hand side is provided a station A for feeding the mater al to the mold, and below it a. station B for receiving the product from the mold. The strips C being fed to the machine will usually be drawn from reels containing the material (not shown) or they may come directly from tubing machines. In feeding the strips to the respective mold cavities they are preferably led around grooved rolls 10 and 11 mounted in an auxiliary frame 12 at the feeding station A. The rolls contain the same number of properly shaped grooves as there are mold cavities, the grooves being in exact alignment with the respective cavities for guiding the strip in an obvious manner to the endless mold cavities. A roll 13 is likewise mounted in the frame 12 at the receiving station 13 and provided with suitab e grooves accurately aligned with the mold cavities for receiving the strip product D 'oming from the mold. These strips may be wound upon reels (not shown) or otherwise handled as desired.

The mold, as before stated is mounted on. the before-mentioned shaft 5 and driven by ihe wheel 7, means being thereby provided for producing continuous relative rm between the mold and stations whereby 1..., endless mold cavity will pass the stations in a continuous progressive manner enabling the material to be fed to the mold cavities and the product received from the cavities in a continuous operation.

It. is obvious that the mold must be open when the material is fed to it and the product is received from it, and to this end the part 3 is formed with the series of sections 4 so that the mold may be progressively opened fractionally in advance of the receiving station and similarly closed after leaving the feeding station. To permit of this means is provided for progressively moving said sections relative to the mold drum part 2 and to accomplish this the sections 4 are hinged, in a. manner that will later be described, at one side of the drum 2 by the pivotal connections 14, and means is provided for progressively swinging the sections open about their hinges when reaching the receiving station and for swinging the sections closed after passing the feeding station.

To produce the swinging movements the ections are each provided at the hinged porlion. with an extending cam-groove-engaging member, shown in the. present instance as an arm 15 carrying an anti-friction roller 16v rsegmental cam plate 17 is secured to the frame 6 and provided with a cam groove 18 for engaging the anti-friction rollers 16. This cam groove extends from a point in advance of the receiving station B to a point beyond the feedingstation A. The entrance to the cam groove is so positioned that the drum rotates the successively advancing rollers 16 of the closed sections will enter the groove. The forward part of the groove is so directed that by its cooperation with the said rollers, means are provided for swinging the sec tions progressively to fractionally open the mold in order that the product may be taken therefrom at the receiving station. The groove is then directed so as to mainta the fraction of the mold open until it passes the feeding station thereby permitting the material to be fed to the mold. The groove is then so directed that by its cooperation with the rollers 16 means will be provided for swinging the sections to fractionally close the mold in a progressive manner whereupon the rollers will leave the grocve. Figures 1 and 3 show three of the mold sections open, a fourth about to be opened and a fifth just closed, all five having their rollers 16 engaged by the groove 18. In this particular embodiment the mold will be opened at the feeding and receiving 'ions over a. space covered by three sectn and as the drum revolves the mold will be opened and closed factionally as the sections are swung open and closed in a progressive manner always providing a fractional opening equal to three sections. Figure '2 shows the path in dash lines that the section takes in swinging open and closed. Figured shows the two extreme positions of a section and its cam-grooveengaging arm. By this construction it will be observed that the means provided will move the sections to one side of the stations in opening the mold :t'ractionally to present an open unobstrncted fraction of the mold to the said stations.

As the mold sections l: are only secured to the drtun at their hinged ends it is desirable to also provide means for closing them at their opposite ends. In the preferred embodiment latches 19 are provided for the sec tions which. are hinged in a manner to be later described to the side of the drum opposite the hinges of the sections 4 by the pivotal connections 20. Two latches are provided for each section, each being composed of a swinging arm 21 terminating in a head 22 which engages an open slot 23 formed in the end of the section l.

Means are provided for swinging the latches to release them from engagement with the sections as the sections are about to l swung open and for engaging them with the sections when the sections have been swung closed. This is accomplished in the present instance by cairn-groove-cngaging arms 2% extending from the latches at their hinged portion and a cam groove 25 formed in a cam plate 26 secured to th frame 6. This cam groove extends from a point in advance of the receiving station 13 to a point beyond the feeding station A. The entrance to the cam groove is so positioned that as the drum rotates the successively advancing arms 2% will enter the groove. These latches re holding the sections closed and the forward part of the cam groove is so directed that, by its co-operation with the said arms, means are provided for swinging the latches progressively to release them from the mold sections. The groove is so directed at its opposite end that by its co-operation with the arms 2% means will be provided for swinging the latches after the sections have been closed to again latch them in their closed positions are so placed relatively tl it the releasing of the latches and the sw using;- of the sections to open them will be timed to take eitect consecutively in advance of the receiving station, and likewise, the swinging of the sections closed and the engagin of them by the latches will be timed to operate consecutively upon the sections leaving the feeding; station.

After the mold sections have been closed it is desirable to so hold them under pressure. They thCI'QfOlG are preferably closed and latched in slightly spaced relation from the drum shown in Figure l and means are provided tor thereafter drawing the sec The cam grooves 18 and tions toward the drum. This produces a final shaping of the material fed to the mold cavities and draws the mold sections closer together at their side faces thereby producing a substantially closed cover for the drum. The pressure producing means is preferably released in advance of the receiving station in order that the hinged parts may be free to be swung; to permit the opening; of the sections.

To produce the desired pressure both the sections at and latches 15.) are pivotally se cured to members movably e1 3; ed by tln drum the members for the sections being in the form of slide rods slidably mounted in orifices formed in the peripheral flange 28 extending); laterally from the drum, while the members for the latches are likewise in the form of slide rods 30 slidably engaged in orifices formed in the peripheral flange 3.1 and lugs 32 extending laterally from the opposite side of the drum. These two series of rods are disposed radially of the drum and are adapted to move or slide outwardly and inwardly. The outward movement forces the section l operated by a set of rods free from the mold cavities on the drum. This is timed to take place just before the latch is released and the section is swung open upon reaching the receiving station. The inward moven'ient draws the mold section tightly against the drum when the section has been closed and latched after leaving the feeding station.

The pressure applying rods are operated by similar mechanism, and therefore, a single description will siii'ilice. The mechanism includes toggles 33, single toggle being provided for each pair of the rods 27 and 30. Each pair of rods 30 is connected by a yoke 34 provided with a lug 85, and similar pairs of the rods 27 are likewise connected by yokes provided with luo s (not shown). The toggles are composed of pivotally connected links 36 and 37. The links 3? have their free ends pivotally connected to the betorementioned lugs connecting the respective pairs of rods 2'? and 30. The free ends of the links 37 are pivotally connected to lugs 38 formed on the peripheral flanges 28 and 31. The links 87 are preferably made adjustable by forming them in sections connected together by the right and left threaded nut 39 preferably secured in position by lock nut 40. This provides a ready means fora fine adjustment of the toggle to insure the proper pressure being applied to the closed mold sections.

In order to set the toggles to produce the pressure and to release them to release the pressure, the links 36 are provided with operating arms ll which are provided at their free ends with anti-friction rollers 4-2. These rollers engage can'iways 43 formed on the cam plates 17 and 26. The

exert the required pressure on the closed mold parts.

The springs are effective for the major portion of the rotation of the drum during which time the mold sections are closed and the material enclosed by them is being shaped and vulcanized. The camw ays 43 are positioned to be effective at a point inadvance of the receiving station B- where as the drum rotates the successively advancing rollers 42 will be engaged by them. The forward part of the camways is so directed that by its co-operation with the said rollers means are provided for swinging the arms ll against the tension of the sprmgs for releasing the toggles, and for simultaneousl movin or slidin' the rods 2'7 and radially outward to release-the pressure on the mold sections and to permit them to move out as shown in dotted lines in Figure a preliminary to swinging the latches and sections to fractionally open the mold. The camways are then directed so as to maintain these outward positions of the rods while the mold sections are open. The camways are then directed so that, by their co-operation with the-rollersdfl means will be provided for permitting the: springs to again act to draw the rods radially backto their former positions, the sections and latches receiving the full effect ofv the springs when the rollers have left'the camways. This is accomplished after the swinging movements of the section and latches have takenplace to close and latch'the section, this position being shown to the left in Figure The pair of camways 43 are so placed relatively that the rod supporting a section and the rods supporting the latches therefor will operate simultaneously.

lVhile the strips of material are being.

subjected to this pressure they are being forced to conform to the configuration of the mold cavity and simultaneously therewith are being vulcanized to the desired degree either wholly or partially as is suitable forany particular purpose. To accomplish this means are provided for heating the niold which should be for at least the period while it is moving through the are when the mold parts are closed under pres sure. To accomplish this in the present instance the drum is provided with an annular chamber 4 5 for containing steam or other heating medium. This serves to heat the mold wall 16 which is made comparatively thin for this purpose.

The heating medium, preferably steam, is supplied to the chamber by a conduit ls'iformed in the shaft 5 and furnished with a stuffing box 48 for connecting it to the supply conduit (not shown) in the usual manner to admit a supply of steam while the shaft is revolving. The conduit 47 is connected to the chamber t5 by a conduit 49, live steam or other heating medium being thereby supplied to the chamber at all times under any desired degree of heat or pressure. One or more petcocks 50 are tapped into the chamber 45 at the base thereof to permit any entrapped air to be moved as well as any condensation where steam is employed as the heating medium. The outer part 3 of the mold is preferably heated by providing a circular chamber 51 encircling the mold for the major portion there of but terminating at either side of the stations to permit an open unobstructed space to be provided at these points, the terminals of the chamber being connected by a pipe 52'which spans the gap at one side of the stations.

As the operation of the machine has been set forth in detail while describing the various parts, it is thought that but a brief description is therefore necessary of the main steps in the operation of the parts. The n'iaterial G is fed continuously to the mold cavities of the partially opened mold at the feeding stationA from the source of supply. The mold sections t after passing this station are closed and latched with the latches 19 by the simultaneous coacting of the arms 15 andthe cam groove 18, and the arms 24 and the cam groove The section 4 is then forced into pressure engagement with the drum 2 by the simultaneous radial inward movement of-the rods 27 and 30 due to the releasing by the camways 43 of the anti-friction rollers 42 and the concurrent action of the springs 44:. The mold thus fractionally closed passes, with the rotation of the drum, around to the receiving station, during which time the material is being formed and vulcanized. On reaching the receiving'station the tensionof the springs 44L is arrested by the co-operation of'the rollers 42 and camways with which they have now engaged. This releases the toggles and moves the rods :27 and 30 radially outward to thereby free the section. The latches 19 are then swung to release them from the sec tion, by the co-operation of the arms 24; and the cam groove 25 with which they have now engaged. The section a is then swung open, by the co-operation of the arm 15 and its cam groove 18 with whichit is then engaged. The fractionally open mold thus passes the stations. The finished product is taken therefrom at the receiving station and the roughly shaped strip fed thereto at the feeding station, after which the mold is again closed as previously described. These operations continue in. a regular sequence,

each mold section opening and closing, upon reaching); and leaving the stations, as the drum rotates, thereby providing a continuously operating machine for producing strip material of any ocsired length and cross section.

As many apparently widely different embodiments of this invention may be made Without departing from the spirit thereof, it is to be understood that it do not intend to limit myself to the specific form of the invention as set forth except as indicated in the appended claims.

it a vi up; thus described my invention, What I claim and desire to protect by Letters Patent is 1. A machine for forming; and vulcanizingg material containing rubber or the like in strip term by a continuous operation, com prising a mold containing an endless mold cavity tor the material, a station for feeding; the material to the mold, a'station for receivinp, the product from the mold, means for producing continuous relative movement between the mold and stations whereby the endless mold cavity Will pass the stations in a continuous progressive manner, means for progressively opening the mold tractionally in advance of the receiving station, means for closing same upon leaving the feeding station, and means for heating the mold.

2. A machine for forming; and vulcanizing material containing rubber or the like in strip form by a continuous operation, comprising a mold containing an endless mold cavity for the material, a station for feeding the material to the mold, a station for re ceiving the product from the mold, means for producing continuous relative movement between the mold and stations whereby the endless mold cavity Will pass the stations in acontinuous progressive manner, means for progressively opening; the mold tractionally in advance of the receiving station, means for closing the mold upon leaving the feeding station, means for holding the mold closed under pressure, and means for heatingthe mold.

A. machine for forming and vulcanizinn material containing rubber or the like in strip form by a continuous operation, comprising a mold containing; an endless mold cavity for the material, a station for feeding the material. to the mold, a station for receiving the product from the mold, means for rotating the mold whereby the endless mold cavity will pass the stations in a continuous progressive manner, means for progressively opening the mold "lfractionally in advance of the receiving), station, means for closing; same upon leaving the feeding staheating the mole tion, and means for .1, ft marhmo Lit :tormmgg and volcanising material containing rubber or the like in strip form by a continuous operation, comprising a mold containing; an endless mold cavity for the material having oppositely disposed reactingparts one of the coacting parts being formed in sections, a station for feeding the material to the mold, a station for receiving the product from the mold, means for rotating the mold whereby the endless mold cavity will pass the stations in a continuous progressive manner, means for progressively moving said sections to open the mold tractionally in advance of the receiving station, means tor closing same upon leaving the feeding station, and means for heating the mold.

5. A machine for forming and vulcanmint, material containing rubber or the like in strip form by a continuous operation, comprising a mold containing an endless mold cavity for the material having oppo sitely disposed coacting parts one of the coacting parts being formed in sections, station for feeding the material to the mold, a station tor receiving the product .lrou: the mold, means for rotating the mold whereby the endless mold cavity will pass-1 the stations in a continuous progressive manner, means for progressively moving said sections to one side of said stations to open the mold 'lractionally in advance oi? the receiv ing station to present an open unobstructed traction of the mold to the said stations, means for closing same upon leaving the feeding; station, and means for heating the mold.

6. A machine for li'orminnand vulcaniaing material containing, rubber or the like in strip form by a continuous operation, comprising; a mold containing}; an endless mold cavity for the material, a station for feeding the material to the mold, a station for receiving the product from the mold, means for rotating the mold whereby the endless mold cavity will pass the stations in a continuous progressive manner, means for progressively opening the mold fraction ally in advance of the receiving station, means for closing same upon leaving the feeding station, and means for heating the mold inchuilinga tired heating chamber surrounding the mold beyond the said sta tions Where the mold opens and closes.

'2'. A machine for forming and vulcanisinp; material containin rubber or the lil: in strip form by a continuous operation, comprising a mold containing an endless mold cavity for the material having oppositely disposed coacting parts one of said coacting parts being in the form of a drum the mold cavity formed therein being on the periphery thereof, the other of saidcoact inn parts being; formed in sections hinged to said drum, a station for feeding the imaterial to the mold, a station for receiving the 'tinuous product from the mold, means for rotating the mold for presenting the entire peripheral mold cavity to the stations in a con progressive manner, means for progressively swinging said sections about their hinges to open the mold fractionally in advance of the receiving station to present an open unobstructed fraction of the said peripheral mold cavity to the said stations, means for swinging the open sections closed upon leaving the feeding station, and means for heating the mold.

,8. A machine for forming and vulcanizing material containing rubber or the like in strip form by a continuous operation, comprising a mold containing an endless mold cavity for the material having oppositely disposed coacting parts one of said coacting parts being in the form of a drum the mold cavity formed therein being on the periphery thereof, the other of the said coacting parts being formed in sections hinged to said drum, a station for feeding the material to the mold, a station for receiving the product from the mold, means for rotating the mold for presenting the entire peripheral mold cavity to the stations in a continuous progressive manner, means for progres sively swinging said sections about their hinges to open the mold fractionally in advance of the receiving station to present an open unobstructed fraction of the sail peripheral mold cavity to the said stations, means for swinging the open sections closed upon leaving the feeding station, and means for heating the mold including a fixed heating chamber surrounding the mold beyond the said stations where the mold opens and closes.

9. A machine for forming and vulcanizing material containing rubber or the like in strip form by a continuous operation, comprising a mold containing an endless mold cavity for the material having oppositely disposed coacting parts one of said coacting parts being in the form of a drum the mold cavity formed therein being on the periphery thereof, the other of the said coacting parts being formed in sections hingedto one side of said drum, a latch for each section secured at the opposite side of said drum, a station for feeding the material to the mold a station for receiving the product from the mold, means for rotating the mold for presenting the entire peripheral mold cavity to the stations in a continuous progressive manner, means for progressively releasing the latches from the sections, means for progressively swinging said sections about their hinges to fractionally open the mold, said latch releasing and section swinging means being timed to operate in advance of the receiving station to present an open unobstructed fraction of the said peripheral mold cavity to the said stations,

means for swinging the open sections closed,

means for operating the latches to engage the closed sections, said section closing me as and said latch operating means being timed to operate upon the sections leaving the feeding station, and means for heating the mold.

10. A machine for forming and vulcaniw ing material containing rubber or the like in strip form by a continuous operation, comprising a mold containing an endless mold cavity for the material having oppositely disposed coacting parts one of said coacting parts being in the form of a drum the mold cavity formed therein being on the periphery thereof, the other of the said coacting parts being formed in sections, a station for feeding the material to the mold, a stat-ion for receiving the product from the mold, means for rotating the mold for presenting the entire peripheral mold cavity to the stations in a continuous progressive manner, means for moving said sections to progressively open the mold fractionally in advance of the receiving station, means for closing same upon leaving the feeding station, means for holding the closed parts of the mold together under pressure, and means for heating the mold.

11. A machine for forming and vulcanizing material containing rubber or the like in strip form by a continuous operation, comprising a mold containing an endless mold cavity for the material having oppositely disposed coacting parts one of said parts being in the form of a drum the mold cavity formed therein being on the periphery thereof, the otherof the said coacting parts being formed in sections hinged to one side of said drum, latching means for each section secured at the opposite side of said drum, a station for feet ing the material to the mold, a station for receiving the product from the mold, means for rotating the mold for presenting the en tire peripheral mold cavity to the stations in a continuous progressive manner, means for progressively releasing the latching means, means for progressively swinging aid sections about their hinges-to fractionally open the mold, said latch releasing and section swinging means being timed to operate-in advance of the receiving station to present an open unobstructed fraction of the said peripheral mold cavity to the said stations, means for swinging the open sections closed, means for applying the latching means to said closed sections, sale sec tion closing and latch applying means ing timed to operate upon the sections leaving the feeding station, means for holding the closed parts of the mold together under pressure after leaving said feeding station, means for releasing said holding means in advance of said receiving station, and means for heating the mold.

lit. A machine for forming and VlllCtll'llZ- inn material containing rubber or the like in strip form by a continuous operation, comprising a mold containing an endless mold cavity for the material having oppositely disposedcoacting parts one of said hei. g in the form of a drum the cavity oove to r e .mgg; station to a point beyond said '7 stat-ion adapted to provide means tor progressively swinging the sections open in advance of the receiv ng station and to provide means for swinging the sections closed after passinp; the feeding station, latching means for each section, means slidahly engaged by said drum for pivotally supporting each of said latching means, a.

member (ongrooveengaoing extending from each of said latching means, a cam plate having; a cam groove for engaging said mentioned members extending from a point 111 advance of sald receiving station to a point beyond said feeding station adapted to provide means for progres sivcly swinging the latching means to release the sections in advance of the receiving;- station and to provide means for swingiogg the latching means to latch the sections litter passing the feeding); station, means applied to said slidable means pivotally secured to the sections and means applied to said able means pivotally secured to said latching means, :tor holding); the seetious closed under pressure, and means for heating: the mold.

ill, it, machine for forming; and vulcaniziou material containing rubber or the like in ztri J 'l'orio by a continuous operz'itioi'i,

contaifing an einlless e a station for t hold, a station or l the produi'st ilrom the mold. iucaos l'or rotates; the mold whereby the erulims mold cavity will pass the stations in a continuous progressive u'lanner, means tor progrcssively opening the mold trad tienolly in advance ot the receiving; station, iii-cans tor closing same upon leaving the feeding station, means for holding the mold clo 'ed under pressure including togqles, and means for l'llztllli'lg the mold.

Pl, A. machine for forming and Vulcan-- izing material containing rubber or the like in strip form by a continuous operation, comprising a mold containing; an endless mold cavity for the material having oppositely disposed coacting parts one of the reacting parts being formed in sections, a station for feeding the n'iaterial to the mold, a station for receiving the product from the mold, means for rotating: the mold whereby the endless mold cavity will pass the stations in a continuous progressive manner, means tor progressively moving said sections to open the mold tractionally in Vance of the receiving station, means for (losing same upon leaning the feeding slation, means for holding the mold closed under pressure incl riding, toggles, means for setting the toggl to effective positions alter the sections have been closed, n'ieans for releasing the toggles prior to opening; the sections, and means for heating the mold.

15. A machine "for forming and vulcani inc; material contaii'iing rubber or the like in strip term by a continuous operation, coinrisino a mold containing an endl mold cavity for the material having oppositely d sposed coacting parts one oi? said parts heingr in the form of a drum the mold cavity formed therein being on the periphery thereof, the other of the said coacting; parts being termed in sections, means movably mounted in the driiim for pivotally supporting each section, latching means for each section, means movably mounted in the drum for pivotally sup aorting each 01' said latching; means, a station for feeding the material to the mold, a station for receiving the product from the mold, means tor rotating the mold for presenting the entire peripheral mold cavity to the stations in a continuous progressive manner, means for nogressively swinging the latching means to release the sections, means for progressively swinging); the sections open about said pivotal connections, said latch releasing and section opening means being timed to operate in advance ol: the receiving); station to present an open unobstrimtcd traction of the said peripheral mold cavity to the ,aid stations, means tor swinging the open sections closed, means for swinging the latohiiu means to latch the sections, sai section clos ing and latching means bein mod to oper ate upon the sections leaving the feeding station, means applied to said movable means pivotallv secured to the sections and aid movable moans pivotally secured to the latching means for holding the closed parts of the mold together under pressure including; toggles, means for setting the toggles to effective positions after the sections have teen closed, means for releasing the toggles prior to opening the sections, and means for heating); the mold.

l6, machine for forming and vulcauiw ing material containing rub e or the like in strip form by a continuous operation, comprising a mold containing an endless mold cavity for the material having oppositely disposed coacting parts one of said parts 9 being in the term oi a drum the mold cavity formed therein being on the periphery hereof, the other of the said coacting parts being formed in sections, a station for feeding the material to the mold, a station for receiving the product from the mold, means for rotating the mold for presenting the entire peripheral mold cavity to the stations in a continuous progressive manner, 1821113 siidably engaged by said drum for pivotally supporting each section, a cam-grooveengaging member extending from each of said sections, a cam plate having a cam groove for engaging said member extending from a point in advance of said receiving station to a point beyond said feeding station adapted to provide means for progressively swinging the sections open in advance of the receiving station and to provide means for swinging the sections closed after passing the feeding station latching means for each section, means slidably engaged by said drum torpivotally supporting each of said latching means, a cam-groove-engaging member extending from each of said latching means, a cam plate having a cam groove for engaging said last mentioned members extending from a point in advance of said receiving station to a point beyond said feeding station adapted to provide means for progressively swinging the latching means to release the sections in advance of the receiving station and to provide means for swinging the latching means to latch the sections after passing the. feeding station, toggles having one end secured to the drum and the opposite end secured to the slid-able means p votally secured to the sections and latching means, arms secured to the toggles, springs having one of their ends secured to the drum and their opposite ends secured to the said arms for setting said toggles for holding said mold closed, fixed camways for engaging said arms for releasing said toggles in advance of the receiving station and adapted to permit the springs to operate beyond the feeding station, and means :tor heating the mold.

Signed at Detroit, in the county of Wayne, and State of Michigai'i, this 1st day of May, 1924i.

ADRIAN o. ABBOTT, JR. 

